That's about right. I've never owned one, but I've heard guys talk about it, and it's not very fresh in the mind. The problem I've heard with rifles in .44 Mag is due to the twist rates There were rifles made that wouls ony stabilize the dinky 180 to 240 grain bullets. Rifles so purchased, were tried with the big 300+ grain bullets. I think they had a slower rate than that. This was likely to make them more compatable with a pistol in .44 Mag using the same load. I don't think a 300 gr bullet would be fun to shoot uness you were hunting. The slower twists could not stabilize the heavier bullet and longer range shots suffered. It seems like they have increased the twist rates for a heavy bullet which make the .44 Mag a much better hunting round. Check your local game laws, there may be cartridge length restrictions like in Alberta.
For it's weight, the .44's are a shorter bullet so you don't have to turn them as fast as say my .45-90 with a 535 gr bullet needs about a 1 in 16" twist, and coversly, my 7mm-08 needs a 1 in 9" rate for a shorter bullet (140 gr) due to having less rotating mass. There is a twist rate formula, and I know I have it somewhere in a stack of books. You plug in bullet length, diameter, and weight, and get out the optimum twist rate. The industry standard twists are normally very close unless you want to do some wildcatting. It's all about maintaining the gyroscopic stability. Just contact the manufacturers of the rifles you are interested in and someone there can help you. It might take some doing though. From all accounts I've heard, the .44 does make a dandy short range bush cartridge.
